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Iana V. Kim

@ianakim.bsky.social
375 followers 540 following 33 posts

Postdoctoral researcher in the Sebe-Pedros and Marti-Renom Labs at CRG. Transposable elements enthusiast, passionate about piRNAs, 3D genomes, and Star Trek 🖖

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Reposted by Iana V. Kim
Centro Andaluz de Biología del Desarrollo @cabd-upo-csic.bsky.social · 08/06/2026
Great talk last Friday at #CABDseminars by @ianakim.bsky.social! Iana gave an overview about the past, current and future research focused on the ‘Evolution of genome regulation at the dawn of animal multicellularity’. She was hosted by @dariloops.bsky.social. Thanks for coming Iana!
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Iana V. Kim @ianakim.bsky.social · 08/06/2026
Thank you @cabd-upo-csic.bsky.social and @dariloops.bsky.social for the invitation, hospitality and fantastic discussions! It was a pleasure to present our work and meet so many inspiring researchers.
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Reposted by Iana V. Kim
Cedric Feschotte @cedricfeschotte.bsky.social · 28/05/2026
Wrote a short piece on Transposable Elements as catalysts of evolutionary innovation for a forthcoming special issue of @naturerevgenet.bsky.social on, duh, Evolutionary Innovation! www.nature.com/articles/s41...
nature.com
Transposable elements as catalysts of evolutionary innovation - Nature Reviews Genetics
In this Comment, Cedric Feschotte highlights evidence from diverse lineages showing that transposable elements are key drivers of evolutionary innovation, repeatedly introducing regulatory and coding ...
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Casey Dunn @caseywdunn.bsky.social · 09/01/2026
Our eLetter github.com/caseywdunn/s... responding to a recent Science paper was just posted. The paper found more genes with consistent support for sponge-sister than ctenophore-sister. We found several technical issues that, when corrected, reverse the conclusions and recover ctenophore-sister.
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Reposted by Iana V. Kim
Nature @nature.com · 09/01/2026
Nature research paper: An expanded registry of candidate cis-regulatory elements go.nature.com/4pAbARf
go.nature.com
An expanded registry of candidate cis-regulatory elements - Nature
The existing ENCODE registry of candidate human and mouse cis-regulatory elements is expanded with the addition of new ENCODE data, integrating new functional data as well as new cell and tissue types.
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Iana V. Kim @ianakim.bsky.social · 14/11/2025
Huge congrats, Dr. Alberti 🎉!
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Iana V. Kim @ianakim.bsky.social · 27/10/2025
Check out this beautiful work from our lab and discover how some corals adapted to live without symbionts 🪸https://www.nature.com/articles/s41586-025-09623-6 !!! Huge congratulations to Shani Levy and @xgrau.bsky.social. It was a privilege for me to contribute to your project 🙏
nature.com
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Iana V. Kim @ianakim.bsky.social · 09/10/2025
Congratulations, Alex 👏👏👏
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Iana V. Kim @ianakim.bsky.social · 08/10/2025
Really grateful to see our work featured by @quantamagazine.bsky.social in this piece on the evolution of genome regulation. Huge thanks to @philipcball.bsky.social for such a beautifully written article.
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 08/10/2025
A thoughtful and beautifully written @quantamagazine.bsky.social article about genome regulatory innovation at the origin of animals. Featuring some of our work and highlighting key open questions. Thanks to @philipcball.bsky.social for this fantastic piece.
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Reposted by Iana V. Kim
Rafeeque Mavoor @rafeequemavoor.bsky.social · 13/05/2025
🧵5 Top Free Alternatives to BioRender for Scientific Illustrations! These five websites offer free scientific illustrations for biologists. Great for presentations, research papers and other research communication needs. Save and share the post!
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Ferdinand Marlétaz @ferdix.bsky.social · 13/08/2025
After nearly twenty years in the making, our attempt at understanding what makes the chaetognath phylum so unique has finally been published! www.nature.com/articles/s41... with #LauraPiovani @dariagavr.bsky.social @alexdemendoza.bsky.social @chemamd.bsky.social and others /1
nature.com
The genomic origin of the unique chaetognath body plan - Nature
Genomic, single-cell transcriptomic and epigenetic analyses show that chaetognaths, following extensive gene loss in the gnathiferan lineage, relied on newly evolved genes and lineage-specific tandem ...
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Reposted by Iana V. Kim
Sean Montgomery @seanamontgomery.bsky.social · 13/06/2025
Updating my intro slides with this fantastic figure now! (And maybe I'll add an extra dashed line for my beloved bryophytes)
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Daniel Ibrahim @danielibrahim.bsky.social · 27/05/2025
How to find Evolutionary Conserved Enhancers in 2025? 🐣-🐭 Check out our paper - fresh off the press!!! We find widespread functional conservation of enhancers in absence of sequence homology Including: a bioinformatic tool to map sequence-diverged enhancers! rdcu.be/enVDN github.com/tobiaszehnde...
rdcu.be
Conservation of regulatory elements with highly diverged sequences across large evolutionary distances
Nature Genetics - Combining functional genomic data from mouse and chicken with a synteny-based strategy identifies positionally conserved cis-regulatory elements in the absence of direct sequence...
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Reposted by Iana V. Kim
Kazuhiro Maeshima @kazu-maeshima.bsky.social · 29/03/2025
Our new paper is out@ScienceAdvances👇 www.science.org/doi/10.1126/... 🧬Our Repli-Histo labeling marks nucleosomes in euchromatin and heterochromatin in live human cells. 🔍 @katsuminami.bsky.social et al. have developed a chromatin behavior atlas within the nucleus. 1/2
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Iana V. Kim @ianakim.bsky.social · 11/05/2025
Thank you so much, Lorenza :)
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Iana V. Kim @ianakim.bsky.social · 09/05/2025
Thank you, Joe :)
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Iana V. Kim @ianakim.bsky.social · 08/05/2025
Thank you, Isabel!
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
Thank you very much, Thibaut!
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
Thank you, Paula :)
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
thank you, Juan!
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
thanks a lot, Claus! :)
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
thank you, Dima!
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
There’s much more to explore in the paper—so dive in! It also opens exciting questions for future research: What is the role (if any) of loop extrusion in the formation of these structures? Are these loops dynamic across development/cell types? When did insulating sequence elements evolved?
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
This is our (current/tentative) model for the early evolution of animal chromatin architecture.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
Finally, in unicellulars, chromatin architecture is “passively” defined by active/repressive chromatin states, without evidence of sequence elements or specific factor binding. See for example co-segregating repressive domains in Sphaeroforma, highly enriched in TEs:
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
In sponges we do not identify loops, despite the existence of distal enhancers. We hypothesize this could be explained by the relative proximity (<10Kb) of these enhancers to the closest TSS. What we do observe are prominent chromatin jets/fountains, as also recently described in other species.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
In the cnidarian Nematostella, we observe multiple enhancer-promoter loops, including some very distal ones (1Mb). Interestingly, here loops show a characteristic one-sided stripe, which may suggest active extrusion (?).
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
In placozoans, we observed promoter-promoter hubs, highly conserved across two distantly related species. Not all genes participate in these hubs, only those containing a sequence motif found in TIR sequences of a Mutator DNA transposon, with highly conserved insertions across all placozoans.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
What proteins are involved in forming these loops? CTCF is absent in non-bilaterians. Using chromatin proteomics and DAP-seq, we identified two ctenophore-specific zf-C2H2 proteins that we called Ctenophore Tethering Element Proteins, which also cannot bind methylated sites.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
The most unexpected finding is the presence of chromatin loops genome-wide in ctenophores, cnidarians and placozoans. Nothing in unicellular holozoans. See an example of the beautiful regulatory landscapes in Mnemiopsis, with thousands of loops connecting enhancers and promoters.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
To interpret these maps we first generated new, chromosome-scale assemblies for Capsaspora, Mnemiopsis and Ephydatia, reassembled pre-existing scaffolds for others species, and profiled diverse linear epigenomic marks (hPTMs, accessibility, methylation).
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
To reconstruct the evolutionary history of animal regulatory genomes, we used Micro-C to explore 3D genomes across 7 lineages (9 species in total!) spanning the origin of Metazoa.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
It's a fantastic collaboration with @alexdemendoza.bsky.social, @pawelburkhardt.bsky.social, @joanjsoto.bsky.social, Sally Leys, Hiroshi Suga, @crisnava.bsky.social , @xgrau.bsky.social, Marta, @aelek.bsky.social, @zolotarg.bsky.social, @seanamontgomery.bsky.social, Ewa, Didac, @encent.bsky.social.
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Iana V. Kim @ianakim.bsky.social · 07/05/2025
I’m very excited to share our work on the early evolution of animal regulatory genome architecture - the main project of my postdoc, carried out across two wonderful and inspirational labs of @arnausebe.bsky.social and @mamartirenom.bsky.social. www.nature.com/articles/s41...
nature.com
Chromatin loops are an ancestral hallmark of the animal regulatory genome - Nature
The physical organization of the genome in non-bilaterian animals and their closest&nbsp;unicellular relatives is characterized; comparative analysis shows chromatin looping is a conserved feature of ...
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Cedric Feschotte @cedricfeschotte.bsky.social · 30/04/2025
💥🥳 At long last, our latest paper is out! Gag proteins of endogenous retroviruses are required for zebrafish development www.pnas.org/doi/10.1073/... Led heroically by Sylvia Chang & @jonowells.bsky.social A study which has changed the way I think of #transposons! No less! 🧵 1/n
pnas.org
Gag proteins encoded by endogenous retroviruses are required for zebrafish development | PNAS
Transposable elements (TEs) make up the bulk of eukaryotic genomes and examples abound of TE-derived sequences repurposed for organismal function. ...
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Reposted by Iana V. Kim
eric lai @lucksmith.bsky.social · 27/03/2025
wow, telomeric transposons in bacteria with linear chromosomes! (of course this was first figured out in flies, inc by Bob Levis, who i was happy to see few days ago at the fly meeting). 🪰 www.science.org/doi/10.1126/... www.sciencedirect.com/science/arti... www.sciencedirect.com/science/arti...
science.org
Telomeric transposons are pervasive in linear bacterial genomes
Eukaryotes have linear DNA, and their telomeres are hotspots for transposons, which in some cases took over telomere maintenance. We identified several families of independently evolved telomeric tran...
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Iana V. Kim @ianakim.bsky.social · 19/03/2025
Transposons are the best 🤩
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Iana V. Kim @ianakim.bsky.social · 19/03/2025
Also look for fascinating biology and transposons!
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Iana V. Kim @ianakim.bsky.social · 19/03/2025
Have you ever wondered😰 which antibodies work best for profiling histone modifications, especially if you don't work with 🐁🪰? Thanks to the incredible effort of @crisnava.bsky.social and @seanamontgomery.bsky.social , who tested dozens of antibodies, we now have the answer. This and much more 👇
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Iana V. Kim @ianakim.bsky.social · 03/03/2025
Organizing the Symposium #CRGBIpostdocs with you all was such a great experience!live long and prosper, friends🖖
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Iana V. Kim @ianakim.bsky.social · 03/03/2025
I hope this is only the beginning of a long-standing tradition #CRGBIpostdocs
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Iana V. Kim @ianakim.bsky.social · 03/03/2025
It was a truly engaging and incredible event 🎊! I feel like the "for postdocs by postdocs" format played a lot of role in bringing us together and making it such an unforgettable conference!Chiara @azzichia.bsky.social , thank you for writing such a great wrap up!!! I couldn't agree more!
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Iana V. Kim @ianakim.bsky.social · 27/02/2025
Such an inspiring discussion on how to disseminate science. It's all about making your research seen, heard and felt! Huge thanks to the panel members #CRGBIpostdocs @crg.eu @babrahaminst.bsky.social
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Aida Rodríguez-Nuevo @aidaronu.bsky.social · 26/02/2025
Wonderful first session at #CRGBIpostdocs Huge thank you to our keynote speaker @mariekeoudelaar.bsky.social (@mpi-nat.bsky.social) and short talk presenters Alex Whale (@babrahaminst.bsky.social) , @ianakim.bsky.social (crg.eu) and Raj Sewduth (@viblifesciences.bsky.social, @eu-life.bsky.social) 👩‍🔬👨‍🔬
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Davide Mazza @davidemazza.bsky.social · 20/12/2024
We often speak about chromatin as being accessible or inaccessible, but what does it mean? We wrote a short review on this, 🔬 focused: sciencedirect.com/science/arti... A big thank you to Tom Fillot for his efforts on this and to @hansen_lab @marcelonollmann for their help as editors.
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 25/11/2024
We have two open PhD positions in my group at @crg.eu. We are seeking candidates with a background in computational and/or molecular biology, and with a broad interest in evolutionary biology, gene regulation, and comparative genomics. 📅Apply before January 12 here: www.crg.eu/en/content/t...
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Molly Gale (Gale-Hammell Lab) @mollygale.bsky.social · 18/11/2024
Tracking transposable element (TE) activity in genomics data can be a pain, but there are solutions! Our lab built TEtranscripts -- which we've updated to work for small RNAs (TEsmall), bulk RNA at the locus level (TElocal), and in single-cell data (TEsingle). Check it out! www.mghlab.org/software
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Job Dekker @jobdekker.bsky.social · 14/11/2024
Leonid Mirny and I wrote this for all interested in chromosomes: "The chromosome folding problem and how cells solve it" www.cell.com/action/showP...
cell.com
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Iana V. Kim @ianakim.bsky.social · 15/11/2024
Huge congrats!!! 🎉
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